Kitchen unit demonstration set



P. R. HARRIS ETAL KITCHEN UNIT DEMONSTRATION SET Nov. 19, 1940.

Filed Sept. 18, 1939 4 sheets-sheet 1 fzz/ezzira:

ATTORNEY 5.

Nov. 19, 1940- P. R. HARRIS ET AL KITCHEN UNIT DEMONSTRATION SET FiledSept. 18, 19:59

4 Sheets-Sheet 2 jkz/ezzfivraz- 1 12 077/19.

J jig 2222A? 5 2 15m My ATTORNEYS.

NOV. 19, 1940. p; R. HARRls ET AL 2,221,766

KITCHEN UNIT DEMONSTRATION SET Filed Sept. 18, 1939 4 Sheets-Sheet 5ATTORNEYS.

Nov. 19, 1940. R HARRIS ET AL 2,221,766

KITCHEN UNITDEMONSTRATION SET Filed Sept. 18, 1939 4 Sheets-Sheet 4fumflfiamig BY ATTORNEYS Patented Nov. 19 1940 PATENT. OFFICE KITCHENUNIT DEMONSTRATION SET Philip B. Harris. Byron R. Pinney. and Ivan H.

Ramsey, Clinton, Iowa, assignors to Curtis Companics Incorporated,Clinton, Iowa, at corporation of Iowa Application September 18, 1939,Serial No. 295,480

22 Claims. This invention relates to a new and improved apparatus forsimplifying and perfecting the de-' sign of buildings, and while notspecifically limited thereto, is principally concerned with perfecting ameans for the designing or remodeling of residences or homes, wherebythe prospective builder maybe enabled to visualize the projectedconstruction or changes in advance, and to adjust the design to fit hisimmediate and particular needs.

Heretofore, builders have always been faced withthe problem of seeing inadvance what the final job will look like,'and how satisfactorily itwill be adapted to their needs. Sometimes, of

course, the plans are prepared by architects and submitted to thebuilder, but very few people are skilled in the reading of blueprints,and at best the prints are only two-dimensional.

As a result, builders are often subjected to expensive and troublesomechanges in plans, and probably. in the majority of cases it is onlyafter the construction is finished and beyond the reasonable possibilityof change that the disappointing features in the design and arrangementbe- 5 come apparent. i

We have conceived that, if any apparatus could be devised that would beeffective to overcome those difflculties for the ordinary non-technicalbuilder, it must be designed to present the true proportions of thestructure to be'erectedas it is only with reference to true proportionthat the average person can in a practical manner understand the design.and visualizethe arrangement.

An object of our invention is to provide-a demresent a portion of a roomand articles in the room whereby the arrangement may be in any desiredform.

Another object is to provide such a set in which the parts are simple,durable and of comparative- 1y inexpensive construction.

A further object is to provide apparatus in which the component partsmay be folded substantially flat for convenience in carrying and 4storing the same.

A further object is to provide component parts of such apparatus whichmay be conveniently folded into form to represent objects in their trueheight, width and depth, to a suitable reduced scale.

The increased interest in emcient kitchen arrangement which has grown upin the last decade has been marked by a strong trend toward the use ofsectional kitchen cabinet units, factory made to standardizeddimensions. A proponstration set consisting of an apparatus to reperlyarranged set 01 such cabinets contributes greatly to the ease andconvenience with which work can be done in the kitchen. The adaptationof these units to the available space, either in building a new house orin modernizing an old 5 one, requires a certain amount of cut and tryexperimentation, and should preferably involve some means for vividvisual demonstration of various proposed arrangements, so that the planbest suited for eilicient use, storage and disposal 10 of the kitchenequipment can be selected.

More particularly, it is our object, for example, to provide ademonstration set representing a portion of the floor and two walls of akitchen, with foldabie members extending'from the wall 1!! portions,representing wall cupboards and work tables or base cabinets.

We also provide cards or sheets of papers representing doors, windowsand the like, all of which are made to scale whereby the doors andwindows may be placed in proper position to represent a givenkitchen. Inaddition, we provide gummed sheets or stickers representing cabinets ofvarious heights, widths and constructional characteristics, adapted tobe fastened to the surface of the portions representing cupboards andwork table spaces.

Thus many diflerent combinations may be worked out and thepictorialeflect readily seen before the cabinets are purchased and areinstalled in the kitchen. The apparatus thus has great usefulness, forexample, as a selling aid in connection with unit kitchen cabinetequipment.

Obviously, the set can be designed for use with objects other thancabinets and it may represent rooms other than a kitchen. With onlyslight. modifications from the exemplification of our invention shownherein, the apparatus can be used for the planning of a home workshoplay-out, or a bathroom, as additiona1 examples.

A further object is to provide a convenient scale to determine aggregatewidths of the stickers, and for positioning the cards along the wall.

Another object is to provide members foldabie to represent odd-shapedpieces of kitchen furnishings, such as a refrigerator or broom closet,the lowenpart of said members being adapted to overlie, the base cabinetportion.

A still further object is to provide a construction for the wall memberswhich permits representation of triangular corner cabinets where it isdesired to gain cabinet space in building around the corner of the room.

With these and other objects in view, our invention consists in theconstruction, arrangement and combination of the various parts of ourdevice, whereby the objects contemplated are attained, as hereinaftermore fully set forth, point- 6 ed out in our claims, and illustrated inthe accompanying drawings, in which:

Figure 1 is an isometric view showing the parts of our demonstration setassembled in a typical simple kitchen layout.

10 Figure 2 is an enlarged top plan view takenon the line 2-2 in Figure1.

Figure 3 is an enlarged cross-sectional view taken on the line 3-3 ofFigure 1. 4

Figure 4 is an enlarged view taken on line 4-4 16 of Figure 1, being atop plan view of the counter portion and a horizontal cross-sectionalview of the wall portion thereof.

Figure 5 is an enlarged horizontal cross-sectional view taken on theline 5-5 of Figure 1.

Figure 6 is an enlarged vertical cross-sectional view taken on the line6-6 of Figure 1. The line on which this section is taken is alsosimilarly indicated in Figure 5.

Figure 7 is a vertical cross-sectional view taken on the line 1-1 ofFigure 6.

Figure 8 is an elevational view of the central portion of an expandablewall section which constitutes one of the parts of ourdemonstration-set. The view represents the wall section 80 in itsflattened form.

Figure 9. is a vertical cross-sectional view taken on the line 9-9 ofFigure 8. In dotted lines it shows how portions of the expandable wallsection are opened into shape for representing de- 5 sired portions of akitchen cabinet installation.

Figure 10 is atop plan view -looking downwardly upon the subject matterof Figure 9 and shows the wall section as it appears when theparallelepiped sections are expanded into full 40 rectangular form, butbefore the wall section is bent as on line 54-66 Figure 8- to form awall corner.

Figure 11 is a view similar to Figure 10, but shows the wall sectionbeing bent into the form 45 of an inside wall corner, with arepresentation of a triangular or 45 wall corner unit. I

Figure 12 is a view similar to Figure 10'; but taken as on the line 4-4of Figure 1, showing the counter top or work table portion before the 60wall section is folded to form a wall corner.

Figure 13 is similar to Figure 12, but showsthe wall section in theprocess of being bent to form a wall corner.

Figure 14 is a layout view showing what we 66 call awindow insert. I

Figure 15 is. a layout view of the element used to form what we havecalled an end plug for the base cabinet section. 3 s

Figure 16 is a similar view of the element used 00 to form an end plugfor the wall section.

Figure 17 is a layout view of an element used to form a representationof a broom closet.

Figure '18 is a layout view of an element used to form a representationof a refrigerator.

Figure 19 is a layout view of an element used to form what we havecalled a splicing plug for the base section; and

Figure 20 is a similar layout view of an element used to form a splicingplug for the wall sections.

In Figure 1 I have used the reference numeral III to indicate a floorsection, which may be formed of heavy cardboard or similar suitablematerial. 0n the floor member l6 we have found it advantageous toprovide a layout of parallel 75 lines, indicated by the referencenumeral I2, to

scored line 28. The adjoining some suitable scale; and we have found itparticularly convenient to use a scale whereby the distance betweenparallel lines such as I2 would represent a full scale distance of sixinches.

The second principal member ofour demonstration set is what we havecalled the expandable wall section W, which is shown in Figures 8-13.This member is preferably formed from a single sheet of cardboard orbristol board as will be seen in Figure 9. The formation of the sheet ofcardboard I4 can best be traced in Figure 9 from the Joint I6, whichrepresents the abutting edges of the sheet. From the joint I8, theportion I8 may be traced upwardly to the line 20, which is scoredhorizontally for the full length of the card to permit easy foldingalong that line. In the able wall section, the cardboard I4 is continuedupwardly from the line '20 by the portion 22 which terminates in anotherhorizontally scored hne at 24. is folded completely upon itself andcontinues downward with the portion 26 to the horizontally portion 30continues to another scored line at 32 and then with another panel 34which is adhesively secured in any suitable way to the portion I8adjacent the joint I6. At 36 is another horizontal scored line and thecardboard I4 can be further traced by the portion 38, the scored line40, the portion 42, the scored line 44, the portion 46 and the scoredline 48. From the line 46 the cardboard extends upwardly in the form ofa panel 50, the upper edge of which is adhesively secured to the panelportion 34 adjacent the joint I6.

In elevation, the central portion of the expandable wall section W, inits unexpanded form, appears as in Figure'8. The horizontal extent ofthe section may be as great as desired, and is limited only by theconventional commercial sizes of cardboard and by convenience inhandling, shipping, etc.

As can be seen by the dotted portions of ,Figure 9, the cardboard can bebent along the scored lines, such as 20, 24, 28 and 32, and the bendingcan be carried to the point at which the panel portions I8, 22, 26 and"form a rectangular parallelepiped with open ends. The portions 22 and38 are formed of such dimensions as to represent the depth of a kitchenwall cabinet to the selected scale, which will be the same scaleselected for the spacing of the floor lines I2 in Figure 1. The portionsI8 and 26 will be formed of proper dimensions to represent the height ofI kitchen wall cabinets to the selected scale. The

portions 58, 38, 42 and 46 are also capable of being bent into the formof a rectangular parallelepiped and will be formed to the same scale.

For convenient assembly of a miniature representation of the corner of akitchen or other room, we form the expandable wall section W in a mannerwhich we have found extremely useful and most adaptable for the purpose.As indicated by the reference numerals in Figure 8, we cut the cardboardI4 along the line connecting the points 52, 56, of the portion 26, andalong the-line connecting the points 62, 64 of the portion 42.

Furthermore, we completely out out the areas bounded by the points 52,54 and 68 in portion flattened form of the eXDand-' Along the line 24the cardboard I4 22, by the points 56, 58 and I0 in the portion 30, bythe points 60, 62 and 12 in the portion 38 and by the points 66, 64 and14 in the portion 46. We also score the portion 26 with vertical linesat 16 and I8, and similarly score the the portions I8 and 80, isvertically scoredsaiong the line joining the points 84 and 88, and infront, the panel 84 is scored between the points 88 and 80. We cutthrough the panel 28 on the lines designated as 84, 88, 81, 88 and 80,and through the panel 42 on the lines 82, 84, -88 and 88.

Figure 12 represents a view looking down on the base section representedby the portion 88 when it has been folded into rectangular or fullyexpanded position.

In Figure 13 'we have shown that the flap I00, which is represented inFigure 8 by the portion of the panel 42 bounded by the points 82, 84, I4and I2 may be bent inwardly. This tends to keep the panels 88, 42 and48expanded in rectangular position and also gets the flap out of the wayof further operations. The rectangular tube formed by expanding theportions 88, 42 and 48 to the left of the center line in Figure 8, isindicated generally as A inFigure 13. A similar rectangular tube isformed by expanding the corresponding members to the left of the centerline in Figure 8, (line 82-84) and such rectangular tube is designatedby B in Figure 13. It is found very easy to bend theentire wall sectionalong the line Joining the points 84-88, and at the same time to insertthe end of rectangular tube B intothe end of rectangular tube A. a

Figure 4 shows the result in completed form of the operation representedin Figure 13.

At the same time, the rectangular tube C (Figure 11) should be held inopened position, to permit the end of the adjacent rectangular tube Dbeing folded into it.

In Figure 1 it will be seen that the lower or base portion is formed ina square inside corner, whereas the wall cabinets above include aso-called corner cabinet, the door of which makes an angle of 45 withthe front faces of the cabinets on either adjoining wall. This form ofcabinet gives somewhat greater space for storage inside.

-The expandable wall section shown in Figures 8-13 incorporates anarrangement whereby either the wall cupboard section or the base cabinetsection can be made with a 45 corner cabinet if desired. In Figure 1 asabove mentioned, we have shown the wall cupboard with the corner cabinetform, and Figures 10 and ll'show this form in process of assembly. I

It will be noted that the slits 84 and 88 in the portion 28 of thecardboard i4 approach each other at their lower ends I02 and I04.

When it is desired to form a 45 corner cabinet, a horizontal cut is madethrough the portion 28, joining the ends I02 and I04 of the slits 84 and88. This leaves a flap I08 which can be bent about the scored line 24.When form-, ing a corner cabinet we also make short vertical cutsconnecting the slits 81, 88 and 80 and horizontal cuts connecting thepoints 8 8I08 and Iii-i iii. The latter cuts leave a flap II2 bounded bythe points 82, 88, H0 and I08, which may be bent, about the scored line18. When the expandable wall assembly is folded along the line 54-88,the flap I08 must be held in horizontal position (shown dotted in Figure10), and the flap H2 is inserted in the slit which forms a continuationof 81, 88 and 80. The representation of a 45 corner cupboard isthusobtained, as at I42 in Figure 1.

Figures 2 and 3 also show the result in.completed form of the operationrepresented in Figure 11. In Figure 3, a portion I4 of the flap 2 isshown as lying flat along the inside surface of the panel portion 28. Itcan be maintained in this position by any suitable adhesive means, andwe have found in the assembly of many demonstration sets of this kindthat a transparent mending tape, such as the so-called Scotch cellulosetape, is excellent for the purpose. In some cases, ordinary rubbercement or other adhesive can be used to good advantage.

It should be noted that'the panels forming the base portion are providedwith similar slits, i. e., 82,84, 88, 88 and the scored line 80, wherebya 45 corner in the base portion may be obtained, if desired, in a mannercorresponding to that employed in the wall cupboard portion.

It will be understood by anyone who has had experience with cardboarddisplay materials that the rectangular tubes A, B, C and D will have atendency to collapse. Some means must be provided to maintain them inthe desired rectangular A shallow box-like member P'is thus formed,

which can be inserted into the end of the rectangular tube B,constituting a closure therefor, as may be seen in Figure 1 at theright-hand side of the figure. We call the member P so used, an endplug. An identical and plug P is seen at-the left-hand side of Figure 1,and in section in Figure 7.

The member indicated generally at I28 in Figure 16 can be folded in thesame way to form an end plug P for the wall cabinet sections. The endplugs P and I? serve to keep the rectangular tubes 'A, B, C and D inshape. In addition, they comprise a closure for the ends of the tubes,whereby they contribute to the realism and attractive appearance of themodel.

It is sometimes desirable to, represent a room in which one or bothwalls are'greater in horizontal extent than can be represented by thewall section W alone. For such a case, we provide additional wallsections W. being substantially the same in cross section as W (Figure9), but

without any of the slits (such as 84, 88, 88, 94, 88) or verticalscoring (such as 78, I8, 80, 82), and of any desired length. A section Wcan be added, as will be seen at. the left side of Figure 1, to extendthe section W to the desired distance.

On the wall sections W and W we have found it a convenience to havescales such as "I25 and I2! in Figure 8, indicating lengths along thewall in the scale to which the model is designed. This is an aid inlocating the spaces to be occupied by doors and windows, either inassembling the model for a new house, or in adapting a cabinetinstallation to the space available in a kitchen already built. It showsquickly the overall space In order to get a smooth and inconspicuousjoint where such an extension is made, and in order to further maintainthe desired rectangular shape of the tubes, we make asplicing meanswhich meets the requirements admirably.

The means referred to is exemplified in Figures 19 and 20. The cardboardsheet indicated generally by I28 in Figure 19 can be folded into theform of a box, somewhat like the sheet of Figure 15, but with theaddition of flaps I30 and I32. The flaps I34 have approximately the samedimensions as the inside of the rectangular tube A or B, and when thesheet I28 is folded up to form a splicing plug S, it can 'be insertedinto the tube. The plug S is pushed about half its length into i thetuberand constitutes, in effect, a cardboard dowel. The added section Wis fitted over the portion of S which projects from the section W. Itwill be noted that Figure 6 is taken in the plane of the joint between Wand W.

The sheet I36 of Figure 20 can be folded up in a similar way and used asa splicing plug S for the wall cabinet section. The location of thisplug in the assembled model is perhaps best shown in Figure 5, where itappears in section. The plugs S and S are shown also in Figures 6 and 7.

To form a second corner of the room, another section W may be added,using splicing plugs S and S in the manner just described. By carryingout the same procedure, all four sides of the room can be shown ifdesired.

To indicate the details of the kitchen cabinet installation, we providegummed sheets or stickers, which bear printed representations of thevarious units. The stickers can be aflixed to the surfaces of therectangular tubes A, B, C or D in any desired arrangement. Various typesof cabinets are represented, as shown in Figure 1, at I38, I40, I42, I44and I46. Typical base cabinets are shown at I48 and I50 and drawer unitsat I52 and I54. These stickers are furnished in many styles, and in arange of sizes representing accurately to scale the various standardsizes of cabinets which may be employed in furnishing the kitchen. Bylaying out the stickers on a sheet of cardboard, the prospective buildercan arrange and rearrange the cabinet layout until a satisfactory one isobtained. A model may then be made up as in'Figure 1, using the parts ofour demonstration set, and the completed model gives a striking threedimensional display of the installation as planned.

To make the picture complete, we also furnish stickers showing stove top(I56), stove front (I58), sink (I60), sink back (I62), shelves (I64,I66), clock (I68), etc. For simplicity in the drawings, the extrathickness of paper represented by the stickers has not been shown.

As is well known, the preferred location for the sink is under a window,and we provide members in our set for convenient representation of thewindow opening. vThese members comprise cardboard sheets such as I10 inFigure 14 with a window design I1I printed thereon. Our set includesseveral such members in various widths, and showing various standardtypes of windows. The sheet I10 has flaps I12, marked off by scoredlines I14 and I16 into portions I18 and I80. The portions I18 and I arefolded into the shape indicated in section at the left side of Figure 3.The member thus formed we call a window insert.

The space intended for the window is cut out of the rectangular tube 0by cuts along the lines.

Joining the points I82, I84, I86, I88, I90, etc. In Figure ,1. ,Thewindow insert I18 is then slipped into place in the space thus cleared.The portions I18 of the flaps I12 close the open ends of the tube 0 andthe portions I80 can be secured with tapeor adhesive cement to the backside of the front panel 26 of the tube, to maintain the flaps I12 inposition and the insert I10 in place.

It need hardly be said that in addition to the window openings there areother portions of the wall space not occupied by cabinets. Such spacesare provided for simply by cutting away parts of the rectangular tubes,as in the case of the window. For a door, of course, both upper andlower tubes would be cut away, and the ends thus exposed would be closedby plugs P and P'. Instead of cutting away parts of the tubes, it may bepreferable in some cases simply to cut off the entire wall member W orW, and to add to it a piece of plain cardboard to which a sticker withthe representation of a door, for example, is attached. i

A stove entirely away from the cabinets would be represented by aportion of the lower tube, the adjacent parts of the tube being cutaway, and the ends of the portion mentioned being closed by plugs P andP'. Stickers like I56 and I58 would be applied to complete therepresentation.

It will be apparent to one skilled in the art that the procedure thusillustrated by examples can be carried out to produce a great variety ofdesigns, comprising various arrangements of the kitchen paraphernalia ina given space.

The form and use of the apparatus which we have developed for thepurpose derives from the fact that in a modern kitchen plan a veryconsiderable portion of the wall space is occupied by sink, stove,storage cabinets, work tables, etc., and from the further fact that inthe construction of a model of such a kitchen, it is much easier tostart with a folded blank such as we have devised, and cut away what isnot wanted, than itis to build upeach unit individually, to'scale, andto assemble the completed units in model form, for what is wanted.

A typical kitchen contains elements which do not correspond veryclosely, either in height or depth, to the wall and base cabinetsprincipally indicated by our wall members W or W'.' The refrigerator andbroom closet are examples. in an actual installation, they are higherthan the base cabinet section, and reach up into the space' occupied bythe wall cupboards. In depth, they actually occupy approximately thedistance be tween the front face of the base cabinets and greatlysimplified without any important sacrifice in the realism, by the use ofwhat we call overlay sections.

A section of this kind is shown in Figure 18, and comprises a cardboardsheet I92, the top part of which can be folded by reason of the scoredlines I94, I96 and I98, and the cuts 200, to form a partial box. Theparts can be taped or secured with adhesive cement to retain the boxform. In this case, the sheet I82 has a refrigerator outline 2M printedon its face and the completed overlay section is cemented in place onthe model at the location designated by the builder for therefrigerator, as at the left in Figure 1. It will be seen that nocutting is required. The horizontal depth of the made-up overlay sectionis just sufllcient to fill the horizontal distance between the face 42of the base portion, and the face 26 of the wall portion.

A similar overlay section is shown fiat and indicated as 202 in Figure17. In folded form, as a broom closet, it appears at the right ofFigure 1. In this case the cardboard is shown blank in Figure 17, thedoor design 204 shown in Figure 1 being applied by afllxing a suitablesticker. The same method may be used with the refrigerator overlaysection I82 if desired.

It will be noted that the overlay method leaves an opening between thewall cupboard section and the base cabinet section, as for examplebehind the refrigerator N2 in Figure 1. We find this is not particularlyobjectionable, but the opening may be covered by means of addedcardboard if greater realism is desired.

In view of the foregoing description, the remarkable adaptability of theelements of our demonstration set for the representation in miniature ofhousehold layouts throughout a wide range of possible arrangements, willbe apparent. The component parts are light, fiat, easy to store and tocarry. The features detailed above make assembly of a typical layout aquick and simple task.

The apparatus represents a salesmans tool of great effectiveness in themerchandising of unit built sectional cabinets. Its flexibilityfacilitates the construction of a particular layout best fitted to theavailable space and to the user's needs. The finished model, showing theproposed installation to scale in length. height and depth, is apowerful aid in visualizing the plan, and, obviously, in selling themerchandise.

1. In a demonstration set of the character described, a devicerepresenting a portion of a room in miniature comprising a pair of wallmembers at right angles to each other, a floor member spanning thedistance between the bottom edges of said Well members, portions of saidwell members comprising panels connected at their edges to formparallelograms in cross section, and being extensible outwardly torepresent wall cabinets, representations of cabinet fronts adapted to beadhesively secured to said panels, an opening in said wall cabinetrepresentation formed by cutting away portions of said panels, a cardrepresenting a window or the like, placed in said opening and retainedagainst transverse movement by abutment with the edges thereof and flapson said card forming closures for the ends of said cabinetrepresentations exposed by said opening formed therein.

2. A demonstration set constituting a device representing a portion of aroom and comprising a wall member, a floor member extending for wardlyfrom the bottom edge thereof, portions of said wall member comprisingthree panels arranged edge to edge with the terminal edges connected tosaid wall member. and cooperating therewith to form a parallelogram incross section, said three panels being extensible outwardly from saidwall member to represent wall cablnets, an additional wall member inadjacent relation forming a continuation of said first mentioned wallmember, three panels on said additional wall member. connected inparallelogram form as on said first mentioned wall member, and

a cardboard dowel piece extending partially into the parallelogramformed by said panels of said first mentioned wall member and partiallyinto the parallelogram formed by said panels on said additional wallmember, said dowel piece having portions parallel and adjacent to eachof said panels, said portions being substantially equal in width to theadjacent panels, making a smooth joint between said wall members, and arectangular flap at each end of said dowel, extending in parallel planesperpendicular to said panels to retain said panels extended inrectangular parallelogram cross section.

3. A demonstration set constituting a device representing a portion of aroom and comprising a wall member, a floor member extending forwardlyfrom the bottom edge thereof, two sets of hingedly connected panels,each set comprising three panels arranged edge to edge with the terminaledges connected to said wall member and cooperating therewith to form aparallelogram in cross section, said sets being extensible outwardlyfrom said well member to represent upper and lower wall cabinets, thecentral panel of the set representing upper cabinets lying in a planeparallel to said wall member, and the central panel of the setrepresenting lower cabinets lying in a second plane parallel to thefirst and at a substantially greater distance from said wall member.

4. In a demonstration device for representing the interior of a room inminiature, a sheet of foldable material adapted to be bent along a linetransversely of said sheet to form two walls, connected panels of flatmaterial on said sheet, said panels being connected to open intorectangular tubular extensions from said walls, and cut-away portionsformed in said panels adjacent said line to permit folding of said sheetalong said line and to permit the junction of said rectangular tubularextensions in the angle so formed.

5. In a demonstration device for representing the interior of a room inminiature, a sheet of foldable material adapted to be bent along a linetransversely of said sheet to form two walls, a; d connected panels offlat material flexibly a tached to said sheet, said panels beingconnected to form parallelepipedons extensible to rectangular form atthe top and at the bottom of said sheet, the pairof parallelepipedons onone side of the above mentioned transverse line being truncated adjacentsaid line at an angle of approximately 45.

6. In a demonstrationdevice for representing the interior of a room inminiature, a sheet of foldable material adapted to be bent along a linetransversely of said sheet to form two walls, panels of fiat materialflexibly attached to said sheet, said panels being connected to formparallelepipeds extensible to rectangular format the top and at thebottom of said sheet with a space between them, the pair ofparallelepipeds on one side of said transverse line having flaps adaptedto extend at an angle of approximately 45 between points on the faces ofsaid parallelepipeds spaced from the intersections of said faces.

the interior of a room in miniature, a sheet of foldable materialadapted to be bent along a line transversely of said sheet to form twowalls, connected panels of fiat material foldably attached to saidsheet, said panels being connected to form parallelepipedons, extensibleto rectangular form, the top and bottom panels of the parallelepipedonon one side of the above mentioned transverse line being truncatedadjacent said line at an angle of approximately 45 and adapted toreceive the adjacent end of the other parallelepipedon, a fiap extendingfrom the front panel of said truncated parallelepipedon, between saidtop and bottom panels thereof to maintain said parallelepipedon inrectangular form at that point and end plugs insertible in 'the outerends of said parallelepipedons to retain said parallelepipedons inrectangular form at said ends.

8. In a demonstration device for representing a room in miniature, asheet of material adapted to be bent along a line transversely of saidsheet to form a left portion and a right portion, foldably hingedconnected panels of fiat material attached to said sheet, said panelsbeing openable for forming, with said sheet parallelepipedons,

one on said left portion and one on said right 1 when said sheet is bentat right angles'along said transverse line, said flap forming thereby arepresentation of a diagonal corner cabinet.

9,, In a demonstration device, a sheet of material adapted to be bentalong a line transversely of said sheet to form a left portion and aright portion, horizontally extending flexibly connected panels attachedto said sheet, said panels forming 45 with said sheet parallelepipedons,one on said left portion and one on said right portion, saidparallelepipedons being extensible to rectangular form, the top andbottom panels of the parallelepipedon on one side of said transverseline being truncated adjacent said line at an angle of approximately 45,a flap extending from the front panel of said last mentionedparallelepipedon, a slit in the front panel of the parallelepipedon onthe other side of said transverse line and spaced from 5 theintersection of the faces of said parallelepipedons, said fiap beinginserted into said slit when said sheet is bent at right angles alongsaid transverse line, said flap then extending at an angle ofapproximately 45 between points on 60 the faces of saidparallelepipedons spaced from the intersections of said faces.

10. In a. device for representing a room in miniature, a vertical panelrepresenting a wall of the room, a member forming a parallelepipedon 65extending horizontally adjacent the lower edge of said panel, and anelement having an upper box-like portion and a lower portion consistingof an extension of the front of said box-like portion, said lowerportion being applied to the front 70 vertical face of saidparallelepipedon, said upper box-like portion being supported above saidparallelepipedon thereby.

11. In a demonstration device, a vertical panel representing a wall of aroom, a horizontally extending rectangular tube adjacent the 19W?! dgemember.

2,221,766 7. In a demonstration device for representing 01' said panel,a second horizontal extending rectangular tube adjacent the upper edgeof said panel and an element having an upper box-like portion and alower portion consisting of an extension of the front of said box-dikeportion, said lower portion being applied to the 'front vertical face ofsaid first rectangular tube, and said boxlike portion being adjacentsaid second rectangular tube.

12. In a demonstration device, a vertical panel representing a wall of aroom, a member extending outwardly from said panel adjacent the loweredge thereof to represent a base cabinet, a second member extendingoutwardly from said panel and vertically spaced above said first memberto represent a wall cabinet, said first member extending furtheroutwardly from said panel than said second member, and an element havingan upper box-like portion and a lower portion consisting of an extensionof the front of said boxlike portion, said lower portion being appliedto the vertical front face of said first member, the depth of saidbox-like portion being approximately the same as the amount by which thefirst member extends outwardly beyond the second 13. In a device forrepresenting a room in miniature, a vertical panel representing a wallof a room, a member forming a lower parallelepipedon extendinghorizontally adjacent the lower edge of said panel, means applied to thefaces of said lower parallelepipedon representing a sink, a secondmember forming an upper parallelepipedon extending horizontally adjacentthe upper edge of said panel, and means for representing a window inthewall of the room comprising an opening formed in said upperparallelepipedon, and a window insert located therein, a central portionof said window insert bearing a representation of a window, and beinglocated adjacent said vertical panel and parallel thereto within saidopening formed in said upper parallelepipedon, wing portions of saidwindow insert extending from said central portion at right anglesthereto, and forming closures for the ends of said upperparallelepipedon exposed by the opening formed therein, and fiapsattached to said wing portions and extending longitudinally along theinner surface of the front face of saidupper parallelepipedon.

14. In a device for representing a room in miniature, a vertical panelrepresenting a wall of a room, a member forming a parallelepipedonlelepipedon, and a window insert located therein,

a central portion of said window insert bearing a representation of awindow, wing portions of said window insert extending from said centralportion at right angles thereto, and forming closures for the ends ofsaid parallelepipedon exposed by the opening formed therein, and flapsattached to said wing portions and extending longitudinally along theinner surface of the front face of said up r parallelepipedon.

15. In a device for representing a room in miniature, a vertical panelrepresenting a wall of a room, a member forming a parallelepipedextending horizontally adjacent the upper edge of said panel, and meansfor representing a window in the wall of the room comprising an openingformed in said parallelepiped, and a window insert located therein, acentral portion of said w ndow insert being located adjacent saidvertical panel and parallel thereto and wing portionsof said windowinsert extending from said central portion and forming closures for theends of said parallelepiped exposed by the opening formed therein.

16. In a demonstration device, a vertical panel representing a wall of aroom, a member forming a tube extending along said panel, and means forrepresenting a window in the wall of the room comprising an openingformed in said tube and a window insert located therein, said insertbeing formed with a central portion, and wing portions extending fromsaid central portion and forming closures for the portions of said tubeexposed by the opening formed therein.

1'7. In a demonstration device for representing a room and wall cases inminiature, a foldable bers intersecting at an angle, a floormemberspanning the distance between the bottom edges of said wallmembers, and panels flexibly connected at their edges to form twocollapsible tubes of parallelogram cross-section extending horizontallyalong each of said wall members, said tubes being spaced from eachother, one being adjacent the upper margin of the wall member and theother being adjacent the lower margin thereof, said latter tube, whenopened to rectangular form, extending a greater distance from itsassociated wall member than does the former tube when opened torectangular form.

19. In meansfor representing a portion of a room to a selected scale, awall member, a floor member, lined squares on the floor memberindicating units of the selected scale, panels flexibly connected attheir edges to form two collapsible tubes of parallelogram cross sectionextending horizontally along said wall member, one

being adjacent the upper margin of said wall member and the other beingadjacent the lower margin thereof, and markings extending horizontally'on each of said tubes, denoting the selected scale.

20. In a demonstration set, a wall member, panels flexibly connected tosaid wall member to form a collapsible member of parallelogram crosssection, a second wall member having a similar collapsible memberthereon, and means for joining said wall members comprising a cardboarddowel piece having a portion extending into said first collapsiblemember and a portion extending into said second collapsible member, eachof saidportions having a flap extending transversely to the associatedcollapsible member to retain said member in extended position.

21. In a demonstration device for representing the interior of a room inminiature, a sheet of foldable material adapted to be bent along a linetransversely of said sheet to form two walls,

panels connected to said sheet and adapted to open therefrom and form arectangular tube lying against said sheet, on each wall, a flap portionof the front panel of one of said tubes foldable outwardly along avertical line and extensible toward the front panel of the other of saidtubes,

and flap portions of the front panel of said otherof said tubes foldableoutwardly along horizontal lines and engaging the top and bottom edgesof said first mentioned flap portion. I

22. In a. demonstration device of the kind dis- I closed, a sheet offoldable material to form a wall, panels of flat material foldablyattached to said sheet, said panels being connected to form aparallelepiped when unfolded, a second sheet,

panels thereon similarly formed, a cardboard dowel piece adaptedto-provide a smooth joint between the parallelepipeds on said twosheets, said dowel piece extending partially into each of saidparallelepipeds, and a rectangular flap at each end of said dowel,extending in a plane substantially perpendicular to said panels, toretain them extended in rectangular parallelepiped form.

' PHILIP R. HARRIS. BYRON R. PINNEY. IVAN H. RAMSEY.

